Scanova has one of the most powerful QR code designers. Change eyes and data pattern easily by choosing them from lots of available options. Add color and gradients. Add logo to your QR Code. Other design option also allows you to add transparent qr codes to your own images. Easily create trackable qr codes and check your scan analytics in real time.

Limitations:

Free version limits Dynamic Qr Codes to 3 and limits vector download. See pricing page for more details: http://scanova.io/pricing.html